The Motion of Small Bubble in the Ideal Vortex Flow

Tip vortex cavitation often occurs on ship propeller. This type of cavitation can cause significant noise compared to the wet flow. Aiming at predicting the inception of tip vortex cavitation, numerous researchers have investigated the detailed flow field around the tip. According to informed studies, the inception of tip vortex cavitation is affected by complicated factors, such as the minimum pressure in the vortex core, the turbulence fluctuation and the water quality. To understand the effect of water quality on cavitation inception, the motion of nuclei in the vortex flow is investigated. The vortex flow is given by the Ranking vortex model. The one-way coupled point-particle-tracking model (PTM) is employed to simulate the trajectory of nuclei. Meanwhile, the theoretical solution of motion of nuclei is obtained and compared to the numerical results.